燃料化学学报2012，Vol.40Issue(5)：519-525,7.
自由落下床中生物质与煤共热解的协同效应对焦油组成的影响
Effect of synergism between biomass and coal during co-pyrolysis in a free fall reactor on tar components
摘要
Abstract
The liquid products from co-pyrolysis of Dayan lignite (DY) and legume straw (LS) and from pyrolysis of the single fuel were classified into asphalts, phenols, aliphatic, aromatics and polar fractions by solvent extraction-column chromatography. Compared with the calculated yield of asphalts, i. e. the mass weighted mean value 19. 0% from pyrolysis of the single coal and biomass, the experimental yield from co-pyrolysis decreased to 11.4% , and the aromaticity of the co-pyrolysis asphalts increased. At the same time, the yield of light molecular weight phenols, methylphenol, dimethylphenol and their derivatives increased at about 5% during the co-pyrolysis; while the content of aliphatic hydrocarbons with long chains decreased. The content of decalins was 43.37% in aromatic fraction of the co-pyrolysis tar, whereas it was almost not found in the tars from pyrolysis of the individual fuel. These results verified that the synergy existed during co-pyrolysis of coal and biomass under the experimental conditions. It was contributed to the reactions such as hydropyrolysis and hydrogenation during co-pyrolysis of coal and biomass under the hydrogen atmosphere mainly supplied by biomass pyrolysis. Co-pyrolysis of coal and biomass favors producing low molecular weight compounds and improving the quality of the liquid product.关键词
煤/生物质/共热解/焦油Key words
coal/biomass/co-pyrolysis/tar分类
化学化工引用本文复制引用
魏立纲,张丽,徐绍平..自由落下床中生物质与煤共热解的协同效应对焦油组成的影响[J].燃料化学学报,2012,40(5):519-525,7.基金项目
国家自然科学基金(50776013) （50776013）
国家高技术研究发展计划(863计划,2008AA05Z407) （863计划,2008AA05Z407）
辽宁省高等学校优秀人才支持计划(2009R10). （2009R10）
